The NFL’s offseason begins in earnest with free agency at 4 p.m. Tuesday and once again the question with the Falcons is: Will they do anything?General manager Thomas Dimitroff has suggested that the Falcons’ agenda this year will be similar to last year's: sign their own free agents, leaving little room for much else. But can the Falcons really afford to do that? Their eventual trade for cornerback Asante Samuel turned out to be the key move of last season.Dimitroff has re-signed safety William Moore, which was important. But what of replacements for John Abraham and Dunta Robinson, who were cut? What if Tony Gonzalez retires -- and the shortcomings at linebacker and on the offensive line?I’ll amplify on this more Tuesday. But the Falcons’ hopes of taking the next step may be difficult if they don’t enhance the roster they have, especially given the backdrop of what others in the NFC may do.Here’s a quick rundown of the six NFC playoff teams from last season, listed in order of how far they each advanced in the playoffs (the unofficial pecking order):